On my f-350 and my new 4 link set up. the articulation is Great but, Now I am having a huge problem.any time my crawler comes under a load or start to climb..The axles roll out from under the truck causing the part of the axle with the motor to push down. I tried to stop this by using limiting straps. and the helps a tad but now instead of just axle roll it is compressing the springs until they are all the way compressed then the axle roll out..can any of you expert builders help me out here to solve this problem? Sorry I can't get a video right now..But may be soon. Thanks

Hi AirborneJordan. i,ve just finished a three link set up which works in the way as a four link, also with good articulation, and had the same problem. i had to make my bottom links longer and move the pivot on the chassis more towards the centre of chassis. this increases the the radius through which it swings. also moved top links so they were behind the centre line of the axle. what i found to happen was that the linkage points formed a near perfect rectangle if you look at them from the side. it took a few tries but i just kept moving points around until i landed up with what i have. hopefully the picture i attached comes through. if not look at my photo album, being new to this forum and forums in general means sometimes i get wrong. good luck.

Durbs

Hey AJ. If this is still the suspension configuration your using then the problem lies in the locations of your control arms where they mount to the Frame. You`ve got all 4 arms mounted at the same level on the frame which allows your diffs to move as if they are on a hinge with no real control rather than allowing them to move up and down in a vertical motion with control....if that makes sense at all. What you`ve essentially got there is a 2 link suspension set-up thats using 4 control arms. If you look at Durbs arms in the pic below, or the arms on my rig you`ll see that they are mounted and inch or so apart where they are mounted on the Frame. I`d suggest that you move your upper arms about an inch up the Frame. You`ll have much better suspension movement then. You will still have some "humping action" until you get a good Oil shock on there; they make a world of difference in how the entire machine moves and reacts to everything; but it will be less than it was. You will probably have to make a longer upper control arm to accomodate the move up the frame or reposition your new frame mount accordingly because this alteration will throw your geometry completely out the window. Either way the headache never ends because just about the time you get it working perfectly you`ll break something

I know it looks close in the pic, but my control arms on the frame are 3/4 of an inch apart at the pivot centres.

HI AJ, I agree with A.R.C....I had the same problem on my (ruger) build,once i re-positioned the link mounting points on the chassis the problem was solved Also check the mounting locations on the axle end of your links...If the upper & lower mounts fall on or close to the same plane, it will have the same hinge action as A.R.C described...hope this helps

THANKS for the help so far! So if I am understanding it right so far...My links on the axles are ok..but what I need to change in the place they mount to the chassis?mounting the inner 2 links higher and the outer links lower? I will try to get some pictures up. I think the thread will really help future builders as well if it becomes more in depth and hopefully more pictures. Once again Thank you Guys!

The more I look at it, I think may be I should move my outer links down.All 4 points are on top of the axle.

This is the current set up..



In the picture below you can see that my links are off set front to back...But not to much different up and down..

Hi AJ,here are some pics of my set-up

pic2

pic3

pic4 before paint & shocks....can see better

Hows everything working AJ? Did you get everything fixed?

A.R.C, could you please give me step by step instrucktions on how to make the three link steering system, I have1:6 jeep, What is you scale jeep.Thanks a million

quote:

Originally posted by Beep Jeep:
A.R.C, could you please give me step by step instrucktions on how to make the three link steering system, I have1:6 jeep, What is you scale jeep.Thanks a million

I apologize to respond to replace A.R.C ..

Beep Jeep .. A.R.C. has the model 1/10 .. NOT A TOY has already made a 4 link on its JEEP 1 / 6 ..



The workplace is substantially the same, but with small differences ..

This message has been edited. Last edited by: loulou,

quote:

Originally posted by Beep Jeep:
A.R.C, could you please give me step by step instrucktions on how to make the three link steering system, I have1:6 jeep, What is you scale jeep.Thanks a million

hi beep jeep , the steering system is easy enough , you can make toyr own links from some threaded rod . and rod ends , you will need to make steering hub extension pieces, as loulou has done , here are some pics . .. .... ... ...

Hey Beep, my Jeep is a 1/10th model. It would take a while to type out the step by step procedure but its quite simple to do. By the looks of Toys pics the 1/10 and 1/6 are fairly close in design. If you click on the link to my build thread which is posted below I have a few good pictures ofthe steering system that should give you a good idea of how its done.

Thanks, A.R.C., Not a Toy, and Loulou. No need to be sorry

This message has been edited. Last edited by: Beep Jeep,